risk management and quants are similar only in the sense that they both require certain level of financial math knowledge. as a matter of fact, pure quantz requires more math knowledge. as a probable result, quantz are paid better than risk managers.

but they serve different roles in, say, an investment bank. quantz supports the traders by providing them with an estimate of price. risk manager usually calculates VaR for a portfolio, or a department or even the whole company and prepares risk report.

hope these helps.